tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 632a8c88e339fe86ae6e420a24dfc641d4dd0ab5 commit: e999995c84c3abb6dcae83f8c35942a8d4ee0451 [6995/9357] ftrace: cleanup ftrace_graph_caller enable and disable config: riscv-randconfig-r003-20220505 (https://download.01.org/0day-ci/archive/20220505/202205052057.2TyEsXsL-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e004fb787698440a387750db7f8028e7cb14cfc) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e999995c84c3abb6dcae83f8c35942a8d4ee0451 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout e999995c84c3abb6dcae83f8c35942a8d4ee0451 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash kernel/trace/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from kernel/trace/fgraph.c:11: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from kernel/trace/fgraph.c:11: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from kernel/trace/fgraph.c:11: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ >> kernel/trace/fgraph.c:37:12: warning: no previous prototype for function 'ftrace_enable_ftrace_graph_caller' [-Wmissing-prototypes] int __weak ftrace_enable_ftrace_graph_caller(void) ^ kernel/trace/fgraph.c:37:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __weak ftrace_enable_ftrace_graph_caller(void) ^ static >> kernel/trace/fgraph.c:46:12: warning: no previous prototype for function 'ftrace_disable_ftrace_graph_caller' [-Wmissing-prototypes] int __weak ftrace_disable_ftrace_graph_caller(void) ^ kernel/trace/fgraph.c:46:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __weak ftrace_disable_ftrace_graph_caller(void) ^ static kernel/trace/fgraph.c:241:15: warning: no previous prototype for function 'ftrace_return_to_handler' [-Wmissing-prototypes] unsigned long ftrace_return_to_handler(unsigned long frame_pointer) ^ kernel/trace/fgraph.c:241:1: note: declare 'static' if the function is not intended to be used outside of this translation unit unsigned long ftrace_return_to_handler(unsigned long frame_pointer) ^ static kernel/trace/fgraph.c:356:6: warning: no previous prototype for function 'ftrace_graph_sleep_time_control' [-Wmissing-prototypes] void ftrace_graph_sleep_time_control(bool enable) ^ kernel/trace/fgraph.c:356:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void ftrace_graph_sleep_time_control(bool enable) ^ static error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations error: A dwo section may not contain relocations fatal error: too many errors emitted, stopping now [-ferror-limit=] 11 warnings and 20 errors generated. vim +/ftrace_enable_ftrace_graph_caller +37 kernel/trace/fgraph.c 32 33 /* 34 * archs can override this function if they must do something 35 * to enable hook for graph tracer. 36 */ > 37 int __weak ftrace_enable_ftrace_graph_caller(void) 38 { 39 return 0; 40 } 41 42 /* 43 * archs can override this function if they must do something 44 * to disable hook for graph tracer. 45 */ > 46 int __weak ftrace_disable_ftrace_graph_caller(void) 47 { 48 return 0; 49 } 50 -- 0-DAY CI Kernel Test Service https://01.org/lkp
